Home Physical Sciences Crystal structure of tris(N-nitroso-N-oxyanilino-κ2O, O′) oxidoniobium(V), C18H15N6O7Nb
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Crystal structure of tris(N-nitroso-N-oxyanilino-κ2O, O′) oxidoniobium(V), C18H15N6O7Nb

  • Alebel N. Belay EMAIL logo , Renier Koen , Johan A. Venter and Ruben M. Drost
Published/Copyright: February 12, 2016

Abstract

C18H15N6O7Nb, monoclinic, P21/c (no. 14), a = 13.070(4) Å, b = 10.165(3) Å, c = 15.109(4) Å, β = 92.198(10)°, V = 2005.9(14) Å3, Z = 4, Rgt(F) = 0.0318, wRref(F2) = 0.088, T = 100 K.

CCDC no.:: 1447423

The crystal structure is shown in the figure. Tables 13 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Red, cuboid, size 0.327×0.362×0.769 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:6.56 cm−1
Diffractometer, scan mode:Bruker APEX-II CCD, φ and ω scans
2θmax:56°
N(hkl)measured, N(hkl)unique:35221, 4825
N(param)refined:289
Programs:SHELX [32], Bruker software [33], Diamond [34], WinGX [35]
Table 2

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomSitexyzUiso
H(18)4e0.44150.42300.94880.037
H(9)4e0.84840.03461.43610.032
H(4)4e0.9605−0.18360.55230.031
H(14)4e0.62180.28590.75870.026
H(10)4e0.7542−0.13891.49040.032
H(5)4e0.90830.03010.57950.031
H(15)4e0.52140.39690.65230.032
H(8)4e0.84140.08221.28550.027
H(11)4e0.6523−0.26311.39430.037
H(12)4e0.6423−0.21501.24410.031
H(3)4e0.9763−0.33190.66750.031
H(16)4e0.38340.52030.69400.039
H(2)4e0.9445−0.26820.81120.028
H(17)4e0.34380.53410.84090.044
H(6)4e0.86690.09270.72140.026
Table 3

Atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
Nb(1)4e0.78031(2)0.12322(2)0.99989(2)0.0189(1)0.0157(1)0.0142(1)0.00090(7)0.00005(7)0.00035(7)
O(7)4e0.8698(1)0.2430(2)1.0215(1)0.0283(9)0.0206(8)0.0249(9)−0.0019(7)−0.0024(7)0.0021(7)
O(4)4e0.6733(1)−0.0415(2)1.0261(1)0.0242(8)0.0256(8)0.0160(7)−0.0044(7)−0.0018(6)0.0001(6)
O(6)4e0.6817(1)0.2076(2)0.9029(1)0.0202(8)0.0197(8)0.0181(8)0.0086(6)0.0012(6)−0.0016(6)
O(5)4e0.6596(1)0.2335(2)1.0598(1)0.034(1)0.034(1)0.0188(8)0.0145(8)0.0029(7)−0.0003(7)
O(1)4e0.8147(1)0.0608(2)0.8733(1)0.0234(8)0.0189(8)0.0167(7)0.0101(6)0.0001(6)0.0005(6)
O(3)4e0.7909(1)0.0721(2)1.1336(1)0.0243(8)0.0189(8)0.0179(8)−0.0060(6)−0.0015(6)0.0018(6)
O(2)4e0.8842(1)−0.0419(2)1.0066(1)0.0248(8)0.0226(8)0.0191(8)0.0055(7)−0.0008(6)0.0025(6)
N(5)4e0.6725(2)−0.0894(2)1.1056(1)0.023(1)0.025(1)0.0169(9)−0.0045(8)0.0001(7)−0.0011(8)
N(6)4e0.7345(1)−0.0285(2)1.1594(1)0.0181(9)0.0163(9)0.0177(9)−0.0011(7)0.0010(7)0.0009(7)
N(1)4e0.9161(2)−0.0965(2)0.9354(1)0.023(1)0.0198(9)0.020(1)0.0044(8)−0.0009(8)0.0016(8)
N(2)4e0.8786(1)−0.0407(2)0.8663(1)0.0164(9)0.0156(8)0.0197(9)0.0039(7)0.0003(7)−0.0004(7)
N(3)4e0.6060(2)0.2828(2)0.9294(1)0.021(1)0.0188(9)0.0206(9)0.0063(7)0.0020(7)−0.0029(7)
C(1)4e0.9024(2)−0.0818(2)0.7787(2)0.014(1)0.019(1)0.020(1)−0.0001(8)−0.0007(8)−0.0034(9)
C(7)4e0.7410(2)−0.0614(2)1.2518(1)0.019(1)0.021(1)0.016(1)0.0023(8)0.0019(8)0.0010(8)
C(18)4e0.4579(2)0.4188(3)0.8896(2)0.026(1)0.031(1)0.035(1)0.011(1)−0.004(1)−0.011(1)
C(13)4e0.5415(2)0.3468(2)0.8629(2)0.018(1)0.016(1)0.029(1)0.0037(8)−0.0035(9)−0.0007(9)
C(9)4e0.8074(2)−0.0157(3)1.3975(2)0.027(1)0.031(1)0.021(1)−0.005(1)−0.0042(9)−0.002(1)
C(4)4e0.9459(2)−0.1577(3)0.6095(2)0.023(1)0.033(1)0.021(1)0.002(1)0.0021(9)−0.008(1)
N(4)4e0.5923(2)0.2975(2)1.0116(1)0.031(1)0.031(1)0.024(1)0.0117(9)0.0035(9)−0.0027(9)
C(14)4e0.5662(2)0.3362(2)0.7750(2)0.017(1)0.019(1)0.029(1)−0.0007(8)−0.0009(9)0.0030(9)
C(10)4e0.7509(2)−0.1194(3)1.4302(2)0.027(1)0.037(1)0.017(1)−0.004(1)0.0011(9)0.004(1)
C(5)4e0.9139(2)−0.0301(2)0.6258(2)0.032(1)0.028(1)0.018(1)0.002(1)−0.0031(9)0.001(1)
C(15)4e0.5060(2)0.4023(2)0.7117(2)0.023(1)0.025(1)0.032(1)−0.0066(9)−0.004(1)0.006(1)
C(8)4e0.8031(2)0.0134(2)1.3076(2)0.025(1)0.023(1)0.021(1)−0.0030(9)0.0004(9)0.0019(9)
C(11)4e0.6899(2)−0.1934(3)1.3726(2)0.032(1)0.037(2)0.023(1)−0.010(1)−0.001(1)0.009(1)
C(12)4e0.6838(2)−0.1653(3)1.2827(2)0.029(1)0.028(1)0.020(1)−0.007(1)−0.0020(9)0.002(1)
C(3)4e0.9558(2)−0.2461(2)0.6787(2)0.027(1)0.022(1)0.030(1)0.0059(9)0.004(1)−0.006(1)
C(16)4e0.4233(2)0.4760(2)0.7366(2)0.031(1)0.021(1)0.043(2)0.000(1)−0.017(1)0.002(1)
C(2)4e0.9358(2)−0.2093(2)0.7645(2)0.026(1)0.018(1)0.026(1)0.0046(9)0.0034(9)0.0009(9)
C(17)4e0.3997(2)0.4841(3)0.8248(2)0.027(1)0.030(1)0.052(2)0.014(1)−0.012(1)−0.014(1)
C(6)4e0.8904(2)0.0081(2)0.7105(2)0.025(1)0.018(1)0.022(1)0.0033(9)−0.0034(9)−0.0014(9)

Source of material

Under atmospheric conditions, NbCl5 (0.27 g, 1 mmol) was dissolved in acetonitrile (10 mL), and treated with tetraethylammonium chloride (0.165 g, 1 mmol). The mixture was refluxed overnight at 90–100 °C and the solvent was removed under vacuum. The yellow Et4N[NbCl6] was obtained. Dry Et4N[NbCl6] (0.16 g, 0.56 mmol) was dissolved in absolute methanol (10 mL), and treated with cupferron (0.2604 g, 1.68 mmol) at room temperature. The resulting mixture was stirred for 4 h, and then the volatile material was removed in vacuo. The resulting residue was washed with diethyl ether (2 × 10 mL), giving a grey solid and the solution was left to stand at 255 K for a few days after which red crystals were obtained. The tetraethylammonium ion was not incorporated in the title compound. IR(KBr): vNbO 924.11 cm−1. 1H NMR (300 MHz, CD3OD): δppm = 6.54 (d, Ph-2H), 6.08 (m, Ph-13H). 13C NMR (300 MHz, CD3OD): δppm = 131.20, 130.86, 130.79, 130.20, 130.06, 128.02, 127.12, 126.95, 118.08, 51.85, (Yield 0.165 g, 83.7%).

Experimental details

The H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with C—H = 0.98 Å and Uiso(H) = 1.2Ueq(C), respectively. The highest peak (2.37 e. Å−3) is located 1.07 Å from O4 and the deepest hole (−0.65 e. Å−3) is situated 0.69 Å from Nb1.

Discussion

The ammonium salt of N-nitroso-N-phenylhydroxylamine, is a well-known analytical reagent (cupferron) and it was very popular especially for analytical separations [1, 2]. The chelate-forming derivatives of this ligand is known to form stable complexes with various metals, but only few of them have been structurally characterized [312]. Also some cupferrates were investigated in our group [1318]. This study forms part of ongoing research to investigate the mechanism of the reactions of O,O′- and N,O-bidentate ligands with transition metals used in nuclear industry, such as Hf, Zr, Nb, Ta [1926]. In the title structure the Nb atom is heptacoordinated by six oxygen atoms, of three bidentate cupferron ligands and an oxido group. The cupferrate ligand forms a five- membered ring with a small bite angle (see the figure). The Nb—O distances are between 1.7107 (5) and 2.2267 (7) Å, and the O—Nb—O angles vary between 68.36(2)° and 158.51(2)°. All the bond distances and angles are similar to other relevant niobium(V) structures [27, 28].


Corresponding author: Alebel N. Belay, Department of Chemistry, University of the Free State, Nelson Mandela Drive, Bloemfontein 9300, South Africa, e-mail:

Acknowledgements:

Financial assistance from the faculty of Natural and Agricultural science, Department of Chemistry, University of the Free State is gratefully acknowledged. Thanks are also due to Prof. Andreas Rooodt (head of the lab, Inorganic group), his financial support and helpful discussion.

References

1. Brown, J.: The use of cupferron (phenylnitroso-hydroxyl-amine ammonium) in: i. the quantitative separation of zirconium, titanium, iron, manganese and aluminum. ii. the analysis of zircon and baddeleyite. J. Am. Chem. Soc. 39 (1917) 2358–2366.10.1021/ja02256a013Search in Google Scholar

2. Buscarons, F.; Canela, J.: Analytical uses of some n-nitroso-n-alkyl (or -n-cyclo-alkyl)hydroxylamines: Part II. solvent extraction of metal hexahydrocupferrates. Anal. Chim. Acta 70 (1974) 113–120.10.1016/S0003-2670(01)82916-0Search in Google Scholar

3. Ahmed, M.; Edwards, A. J.; Jones, C. J.; McCIeverty, J. A.; Rothin, A. S.; Tate, J. P.: Metal complexes of N-aryl-N-nitrosohydroxylamines: cleavage of N—N bonds to give metal nitrosyl species and organonitrogen compounds, and the crystal structure of [RhCl2ONN(C6H4Me-p)O (H2O)(PPh3)]. 0.5Me2CO. J. Chem. Soc. Dalton Trans. (1988) 257–263.10.1039/DT9880000257Search in Google Scholar

4. Basson, S. S.; Leipoldt, J. G.; Purcell, W.; Venter, J. A.: Structure of carbonyl(N-hydroxy-N-nitrosobenzenaminato-O,O′)(4-methyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane) rhodium(I). Acta Crystallogr. C48 (1992) 171–173.10.1107/S0108270191008223Search in Google Scholar

5. Bolboaca, M.; Cinta, S.; Venter, M.; Deak, A.; Haiduc, I.; Cozar, O.; Iliescu, T.; Rosch, P.; Kiefer, W.: Vibrational behavior of transition metal cupferronato complexes: Raman studies on cobalt(II) cupferronato derivatives. Spectrosc. Lett. 33 (2000) 857–862.10.1080/00387010009350162Search in Google Scholar

6. Kovalchukova, O.; Bostanabad, A. S.; Sergienko, V.; Polyakova, I.; Zyuzin, I.; Strashnova, S.: Synthesis, characterization, spectroscopic and crystallographic investigation of metal complexes of N-benzyl-N-nitrosohydroxylamine. Open J. Inorg. Chem. 3 (2013) 1–6.10.4236/ojic.2013.31001Search in Google Scholar

7. Najafi, E.; Amini, M. M.; Ng, S. W.: Bis(μ-N-nitroso-N-phenylhydroxylaminato)- κ3O, O′;O′;κ3O′;O,O′-bis[(N-nitroso-N-phenylhydroxylaminato-κ2O,O′)lead(II)]. Acta Crystallogr. E67, (2011) m377.10.1107/S1600536811006775Search in Google Scholar

8. Okabe, N.; Tamaki, K.: Dimethanolbis(N-nitroso-N-phenylhydroxylaminato-O,O′)nickel(II). Acta Crystallogr. C51 (1995) 2004–2005.10.1107/S0108270195005816Search in Google Scholar

9. Parkanyi, L.; Kalman, A.; Deak, A.; Venter, M.; Haiduc, I.: A new inorganic (carbon-free) chelate ring: SnO2N2. Eight-coordinated tin(IV) in Sn(O2N2Ph)4 and a self-assembled 20-membered macrocycle in [Me3Sn(O2N2Ph)]4. Inorg. Chem. Commun. 2 (1999) 265–268.10.1016/S1387-7003(99)00062-3Search in Google Scholar

10. Pavel, I.; Cinta, S.; Venter, M.; Deak, A.; Haiduc, I.; Rosch, P.; Cozar, O.; Kiefer, W.: Vibrational behavior of transition metal cupferronato complexes. Raman and SERS studies on nickel(II) cupferronato complexes. Vib. Spectrosc. 23 (2000) 71–76.10.1016/S0924-2031(99)00086-7Search in Google Scholar

11. Tamaki, K.; Okabe, N.: Diaquabis[N-(1-naphthyl)-N-nitrosohydroxylaminato-O,O′] cobalt(II). Acta Crystallogr. C54 (1998) 195–197.10.1107/S0108270197013620Search in Google Scholar

12. Van der Helm, D.; Merritt, L. L.; Degeilh, R.; MacGillavry, C. H.: The crystal structure of iron cupferron Fe(O2N2C6H5)3. Acta Crystallogr. 18 (1965) 355–362.10.1107/S0365110X65000816Search in Google Scholar

13. Basson, S. S.; Leipoldt, J. G.; Roodt, A.; Venter, J. A.: Crystal structure of carbonyl (N-hydroxy-N-nitrosobenzenaminato-O,O′) triphenylphosphinerhodium(I). Inorg. Chim. Acta 118 (1986) L45.10.1016/S0020-1693(00)81365-1Search in Google Scholar

14. Basson, S. S.; Leipoldt, J. G.; Roodt, A.; Venter, J. A.: Mechanism for the oxidative addition of iodomethane to carbonyl(N-hydroxy-N-nitrosobenzenaminato-O,O′)- triarylphosphinerhodium(I) complexes and crystal structure of [Rh(cupf)(CO)(CH3)(I)(PPh3)]. Inorg. Chim. Acta 128 (1987) 31.10.1002/chin.198731295Search in Google Scholar

15. Basson, S. S.; Leipoldt, J. G.; Purcell, W.; Venter, J. A.: Structure of carbonyl(N-hydroxy-N-nitrosobenzenaminato-O,O′)(4-methyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane) rhodium(I). Crystallogr. C48 (1992) 171.10.1107/S0108270191008223Search in Google Scholar

16. Venter, J. A.; Purcell, W.; Visser, H. G.: Di-μ-iodido-bis[acetyl(4-methyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane)(N-nitroso-N-oxidoaniline-κ2O,O′)rhodium(III)]. Acta Crystallogr. E65 (2009) m1528–m1529.10.1107/S1600536809043050Search in Google Scholar PubMed PubMed Central

17. Venter, J. A.; Purcell, W.; Visser, H. G.; Muller, T. J.: Carbonyl (N-nitroso-N-oxido-1-naphtylamine-κ2O,O′)(triphenylphosphine-κP)rhodium(I) acetone solvate. Acta Crystallogr. E65 (2009) m1578.10.1107/S1600536809047321Search in Google Scholar PubMed PubMed Central

18. Pretorius, C.; Venter, J. A.; Roodt, A.: Crystal structure of 2,2,6,6-tetramethyldihydropyran-4-onium bis(N-nitroso-N-phenylhydroxylaminato-κ2O,O′)dioxide vanadium(V), C21H27N4O8V. Zeitschrift für Kristallographie. NCS 229 (2014) 437–439.10.1515/ncrs-2014-0194Search in Google Scholar

19. Viljoen, J. A.; Roodt, A.; Muller, A. J.: Tetrakis(1,1,1-tri-fluoroacetylacetonato-κ2O,O′)hafnium(IV) toluene disolvate. Acta Cryst. E 64 (2008) m838–m839.10.1107/S1600536808015237Search in Google Scholar PubMed PubMed Central

20. Viljoen, J. A.; Visser, H. G.; Roodt, A.; Steyn, M.: Tetrakis(quinolin-8-olato-κ2N,O)hafnium(IV) toluene disolvate. Acta Crystallogr. E65 (2009) m1514–m1515.10.1107/S1600536809043244Search in Google Scholar PubMed PubMed Central

21. Viljoen, J. A.; Visser, H. G.; Roodt, A.; Steyn, M.: Di-μ-hydroxido-bis[tris(1,1,1,5,5,5-hexa-fluoro-acetyl-acetonato-κ2O,O′) hafnium(IV)] acetone solvate. Acta Crystallogr. E65 (2009) m1367–m1368.10.1107/S1600536809041658Search in Google Scholar PubMed PubMed Central

22. Viljoen, J. A.; Visser, H. G.; Roodt, A.: Tetrakis(8-quinolinolato -κ2N,O)hafnium(IV) dimethylformamide solvate monohydrate. Acta Crystallogr. E66 (2010) m603–m604.10.1107/S1600536810014960Search in Google Scholar

23. Steyn, M.; Roodt, A.; Steyl, G.: Tetrakis(1,1,1-trifluoro-acetyl-acetonato-κO,O′)zirconium(IV) toluene solvate. Acta Cryst. E64 (2008) m827.10.1107/S1600536808014499Search in Google Scholar

24. Herbst, L.; Koen, R.; Roodt, A.; Visser, H. G.: (Acetyl acetonato-κO,O′)chlorido-trimethanolatoniobium(V). Acta Cryst. (2010) m801–m802.10.1107/S1600536810021719Search in Google Scholar

25. Herbst, L.; Visser, H. G.; Roodt, A.; Muller, T. J.: cyclo-tetra-μ-oxido-tetrakis[(acetylacetonato-κ2O,O′)bis(ethanolato-κO) niobium(V)]. Acta Crystallogr. E67 (2011) m1669–m1670.10.1107/S1600536811044138Search in Google Scholar

26. Herbst, L.; Visser, H. G.; Roodt, A.: Crystal structure of (benzoylacetonato- κ2O,O′)dichloridodimethoxidotantalum(V), C12H15Cl2TaO4. Z. Kristallogr. NCS 228 (2013) 397–398.10.1524/ncrs.2013.0200Search in Google Scholar

27. Sokolov, M.; Imoto, H.; Saito, T.; Fedorov, V. J.: Substitution of bridging S2 ligands in the [Nb2(μ-S2)2]4+ core: a simple route to [Nb2(Se2)2]4+, [Nb2(S)(Te2)]4+ and [Nb2(S)2]4+. J. Chem. Soc. Dalton Trans. (1999) 85–90.10.1039/a806627bSearch in Google Scholar

28. Antinolo, A.; Carrillo-Hermosilla, F.; Fernandez-Baeza, J.; Otero, A.; Palomares, E.; Rodriguez, A. M.; Sanchez-Barba, L. F.: Studies on the reactivity of alkoxo-niobium(V) compounds towards O,O- or S,S-enolate ligands. Synthesis and structural characterisation of (alkoxo)(beta-diketonato)- and (alkoxo)[dialkyl(aryl)dithiocarbamato] complexes of niobium(V). J. Organomet. Chem. 603 (2000) 194–202.10.1016/S0022-328X(00)00168-6Search in Google Scholar

29. Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–12.10.1107/S0108767307043930Search in Google Scholar PubMed

30. Bruker. SAINT-Plus (Version 7.12), APEX2 and SADABS (Version 2004/1). Bruker AXS Inc., Madison, Wiscon sin, USA, 2004.Search in Google Scholar

31. Brandenburg, K.: DIAMOND. Visual Crystal Structure Information System. Version 3.0c Crystal Impact, Bonn, Germany, 2005.Search in Google Scholar

32. Farrugia, L. J.: WinGX suite for small molecule single crystal crystallography. J. Appl. Crystallogr. 32 (1999) 837–838.10.1107/S0021889899006020Search in Google Scholar

Received: 2015-7-31
Accepted: 2016-1-14
Published Online: 2016-2-12
Published in Print: 2016-6-1

©2016 Alebel N. Belay et al., published by De Gruyter.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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  19. Crystal structure of 2-(4-acetyl-2,6-dimethylphenyl)-5,6-dichloro-1H-isoindole-1,3(2H)-dione, C18H13Cl2NO3
  20. Crystal structure of diaqua-bis(μ3-2-methyl-6-oxidopyridinium-4-carboxylato-κ3O:O′:O′′)neodymium(III) chloride, C14H16ClN2O8Nd
  21. Crystal structure of 5-methoxy-4-methyl-2-(2-methylbenzyl)-2,4-dihydro-3H-1,2,4-triazol-3-one, C12H15N3O2
  22. The crystal structure of 1-(4-(2-chloroethoxy)phenyl)ethanone
  23. Crystal structure of (E)-4-(2-(4-(diethylamino)phenyl)diazen-1-ium-1-yl)benzenesulfonate monohydrate
  24. Crystal structure of 2,2′-[(1E)-prop-1-ene-1,2-diyldisulfanediyl]bis(5-methyl-2,5-dihydro-1,3,4-thiadiazole, C9H10N4S4
  25. Crystal structure of poly [μ2-acetato-κ3-O,O′:O′)diaqua(μ3-isophthalato-κ4O,O′:O′′:O′′′)cerium(III)] monohydrate (C10H13O9Ce)
  26. Crystal structure of tris((2-(2,2-dicyanovinyl)phenoxy)ethyl)amine, C36H27N7O3
  27. Crystal structure of catena[diaqua-bis(μ2-1,3-bis((1H-tetrazol-1-yl)methyl)benzene-κ2N:N′)copper(II)] dinitrate, C20H24CuN18O8
  28. Crystal structure of (4-(1H-imidazol-5-yl)benzoic acid-κN) (4-(1H-imidazol-5-yl)benzoato-κN)silver(I), C20H15N4O4Ag
  29. Crystal structure of 2-amino-3-cyano-7,7-dimethyl-5-oxo-4-(3,4,5-trifluorophenyl)-4H-5,6,7,8-tetrahydrobenzo[b]pyran, C18H15F3N2O2
  30. Crystal structure of (2-(2-chlorophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol hemihydrate, C13H17ClO3 · 0.5 H2O
  31. Crystal structure of catena-poly[diaqua-bis(benzene-1,2,4,5-tetracarboxylato-κN)(m2-2-(1H-1,2,4-trizol-1-ylmethyl)-1H-3,1-benzimidazol-3-ium-κ2O:O′)zinc(II)] dihydrate, C30H30N10O12Zn
  32. Crystal structure of [2,2′-((((ethane-1,2-diylbis(oxy-κ2O,O′))bis(2,1-phenylene))bis(azanylylidene-κ2N,N′))bis(methanylylidene))diphenolato-κ2O′′,O′′′]zinc(II), C28H22N2O4Zn
  33. Crystal structure of (E)-1-(3,4-dimethoxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C13H17NO3
  34. Crystal structure of bis(2-fluoro-4-nitrophenyl) terephthalate C20H10F2N2O8
  35. Crystal structure of catena-[aqua((4-carboxyphenyl)acetato-κO)(μ2-(4-carboxyphenyl)acetato-κ2O:O′)bis(4,4′-ethene-1,2-diyldipyridine-κN)manganese(II)], C42H36N4O9Mn
  36. Crystal structure of N′-(2-hydroxybenzylidene)-3,4-dimethyl-1H-pyrrole-2-carbohydrazide, C14H15N3O2
  37. Crystal structure of bis(8-ethyl-5-oxo-2-(piperazin-4-ium-1-yl)-5,8-dihydropyrido[2,3-d]pyrimidine-6-carboxylato-κ2O,O′)copper(II) benzene-1,4-dicarboxylate dihydrate, C36H42CuN10O12
  38. Crystal structure of diaquabis(μ2-biphenyl-2,2′-dicarboxylato-κ2O:O′)bis(1-ethyl-6-fluoro-1,4-dihydro-4-oxo-7-(1-piperazinyl)-3-quinolinecarboxylato)zinc(II), C60H56N6Zn2O16F2
  39. Crystal structure of 2-amino-4-(4-fluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H13FN2O2
  40. The crystal structure of hexaqua(μ2-3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)propanoato-1κ2O,O′;2κO′)(3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)propanoato-κO)(3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)propanoato-κ2O,O′)digadolinium(III) octahydrate, C60H76Gd2N18O32
  41. Crystal structure of hexacarbonyl bis(μ2-2-methoxybenzenethiolato-κ2S)pyridine(triphenylphosphane)dirhenium(I), C43H34NO8PS2Re2
  42. Crystal structure of 14-((1-(benzyloxycarbonyl-amino)-2-methylpropan-2-yl)sulfanyl)acetate Mutilin, C34H49NO6S
  43. Crystal structure of 2-methoxy-6-(((2-(1-methyl-1H-benzo[d] imidazol-2-yl)phenyl)imino)methyl)phenol — ethanol (1/1), C24H25N3O3
  44. Crystal structure of 2-(bis(methylthio)methylene)-1-phenylbutane-1,3-dione, C13H14O2S2
  45. Crystal structure of (E)-2-(bis(methylthio)methylene)-1-phenyl-3-(2-phenylhydrazono)butan-1-one, C19H20N2OS2
  46. Crystal structure of dichlorido(2-(1-methyl-1H-benzo[d]imidazol-2-yl)aniline-κ2N,N′)zinc(II)
  47. Crystal structure of bis(1-methyl-1H-tetrazole-5-thiolato)mercury(II)
  48. Crystal structure of (E)-2-styryl-1-ferrocenylsulfonyl-1H-imidazo[4,5-b]pyridine, C24H19FeN3O2S
  49. Crystal structure of aquabis(1-cyclopropyl-6-fluoro-4-oxo-7-(piperazin-4-ium-1-yl)-1,4-dihydroquinoline-3-carboxylato-κ2O,O′)copper(II) thiophene-2,5-dicarboxylate trihydrate, [Cu(C17H18N3FO3)2(H2O)](C6H2SO4)·3(H2O)
  50. Crystal structure of 2-amino-4-(2,6-dichlorophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C18H16Cl2N2O2
  51. Crystal structure of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5·5·0·05·9·03·11]dodecane 1/3 hydrate, C6H8N12O13
  52. Crystal structure of monocarbonyl(N-nitroso-N-oxido-phenylamine-κ2O,O′)(triphenylarsine-κAs)rhodium(I), C25H20AsN2O3Rh
  53. The crystal structure of 1-(4-(4-chlorophenoxy)-2-chlorophenyl)ethanone, C14H10Cl2O2
  54. Crystal structure of N,N-diethyl-2-(2-(6-(4-methoxybenzyl)-7-oxo-7H-thiazolo[3,3-b][1,2,4]triazin-3-yl)phenoxy)acetamide, C25H26N4O4S
  55. Crystal structure of tetraqua((E)-4,4′-(diazene-1,2-diyl)bis(5-oxo-4,5-dihydro-1,2,4-triazol-1-ide)-κ2N:O)barium(II), C4H10N8O6Ba
  56. Crystal structure of 2-amino-4-(3-phenoxyphenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C22H18N2O3
  57. Crystal structure of diethylammonium 5-((4-fluorophenyl)(6-hydroxy-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)methyl)-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidin-4-olate, C23H30FN5O6
  58. Crystal structure of 2-amino-4-(3,5-difluoro-phenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H12F2N2O2
  59. Crystal structure of tris(N-nitroso-N-oxyanilino-κ2O, O′) oxidoniobium(V), C18H15N6O7Nb
  60. Crystal structure of 1-(5-benzoyl-4-methyl-2-(phenylamino)thiophen-3-yl)ethan-1-one, a structure with Z′ = 6, C20H17NO2S
  61. Crystal structure of diethyl-3-methyl-4-phenylthieno[2,3-b]thiophene-2,5-dicarboxylate, C19H18O4S2
  62. Crystal structure of 3,5-dicarboxybenzoate — benzene-1,3,5-tricarboxylic acid (1/1), C24H22N2O12
  63. The crystal structure of 2-chloro-1,3-bis(2,4,6-trimethylphenyl)-4,4-dimethyl-1,3,2λ3,4-diazaphosphasiletidine
  64. Crystal structure of hexaquamanganese(II) bis(hexaborato-κ3O,O′,O′′)manganese(II) dihydrate, B12H28Mn2O34
  65. Crystal structure of 1-propyl-3-methylimidazolium pentaborate, [C7H13N2][B5O6(OH)4]
  66. Crystal structure of 13-(4-fluorophenyl)-11,13-dihydro-1H-benzo[h]indazolo[6,7-b] [1, 6]naphthyridin-12(6H)-one — dimethylformamide — water (1/2/1), C29H31FN6O4
  67. Crystal structure of 1-(2-chlorophenyl)-2-(2-nitrophenyl)ethan-1-ol, C14H12ClNO3
  68. Crystal structure of (Z)-2-((2-bromo-1-phenylvinyl)oxy)benzonitrile, C15H10BrNO
  69. Crystal structure of tetrachlorido(1E,1′E)-N,N′-((1,4-phenylenebis(propane-2,2-diyl))bis(4,1-phenylene))bis(1-(pyridin-2-yl-κN)methanimine-κN)dizinc(II), C36H34N4Zn2Cl4
  70. Crystal structure of 2,6-bis(3-methylpyridinyl)hexahydro-4,8-ethenopyrrolo-[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone, C24H20N4O4
  71. Crystal structure of trans-bis(2-methylmaleato-κ2O,O′) bis(piperazinium-κN) cobalt(II) trihydrate, C18H36CoN4O11
  72. Crystal structure of (E)-4-chloro-N′-(4-(diethylamino)benzylidene)benzohydrazide, C18H20ClN3O
  73. Crystal structure of 3,6-di(1H-imidazol-1-yl)-9H-carbazole, C18H13N5
  74. Crystal structure of 4-(4-pyridinyl)-1-naphthoic acid, C16H11NO2
  75. Crystal structure of 1,1′-diformyl-4,4′-(6H,12H-5,11-methano-dibenzo[b,f][11,5]diazocine-2,8-diyl)dibenzene, C29H22N2O2
  76. Crystal structure of N′-(adamantan-2-ylidene)pyridine-3-carbohydrazide, C16H19N3O
  77. Crystal structure of 1,1′-(butane-1,4-diyl)bis(5-methyl-1H-pyrazole-3-carbaldehyde), C14H18N4O2
  78. Crystal structure of methyl 8-hydroxy-3-isopropyl-5a,8-dimethyl-2,3,4,5,5a,6,7,8,10a,10b-decahydrocyclohepta[e]indene-3a(1H)-carboxylate, C21H34O3
  79. Crystal structure of 6-oxo-4-propyl-2-(propylthio)-1,6-dihydropyrimidine-5-carbonitrile, C11H15N3OS
  80. Crystal structure of poly[diacetato(μ2-1,4-bis(1H-imidazol-1-yl)benzene-κ2N:N′)nickel(II)], C26H22N8NiO4
  81. Crystal structure of bis(2,4-dibromo-6-{(E)[(4-fluorobenzyl)imino]methyl}phenolato-κ2N,O) copper(II), C28H18Br4F2N2O2Cu
  82. Crystal structure of 1-(adamantan-1-yl)-3-phenylthiourea, C17H22N2S
  83. Crystal structure of 3-(6-(5-amino-1-phenyl-1H-pyrazol-3-yl)pyridin-2-yl)-1-phenyl-1H-pyrazol-5-amine – dioxan (2/1), C25H23N7O
  84. Crystal structure of 5-ethyl-6-[(3-methylphenyl)sulfanyl]pyrimidine-2,4(1H,3H)-dione, C13H14N2O2S
  85. Crystal structure of (((1E,1′E)-(cyclohexane-1,2-diylbis(azanylylidene-κ2N,N′))bis(methanylylidene))bis(2,1-phenylene))bis((2,6-diisopropylphenyl)amide-κ2N′′,N′′′)manganese(II), C44H54N4Mn
  86. Crystal structure of prop-2-en-1-yl 2-oxo-2H-1-benzopyran-3-carboxylate, C13H10O4
  87. Crystal structure of bis(μ2-2-((3-methylphenyl)imino)methylphenolato-κ2N,O:O)hexacarbonyldimanganese(I), C34H24Mn2N2O8
  88. Crystal structure of (Z)-1-(1,5-dimethyl-1H-pyrazol-3-yl)-3-hydroxybut-2-en-1-one C9H12N2O2
  89. Crystal structure of 2,2′-[pentane-1,5-diylbis(oxy)]dibenzaldehyde, C19H20O4
  90. Crystal structure of 2-phenyl-5,6,7,8-tetrahydro-4H-benzo[4,5]thieno[2,3-d][1,3]oxazin-4-one, C16H13NO2S
  91. Crystal structure of (E)-1-(2-chlorophenyl)-N-(4-chlorophenyl)methanimine, C13H9Cl2N
  92. Crystal structure of ethyl 2-amino-5-bromothiazole-4-carboxylate, C6H7BrN2O2S
  93. Crystal structure of 2-benzylisothiouronium tetraphenylborate, C32H31BN2S
  94. Crystal structure of poly[(μ2-biphenyl-2,2′-dicarboxylato-κ4O,O′:O′′,O′′′)(μ2-4,4′-bipyridine-κ2N:N′)copper(II)], C24H16CuN2O4
  95. Crystal structure of (η5-pentamethylcyclopentadienyl)titanium(III)dichloride (THF), C14H23Cl2OTi
  96. Crystal structure of 3-ferrocenylsulfonyl-2-(4-methoxyphenyl)-3H-imidazo[4,5-b]pyridine, C23H19FeN3O3S
  97. Crystal structure of 2-benzoyl-3-(4-fluorophenyl)cyclopropane-1,1-dicarbonitrile, C18H11FN2O
  98. Crystal structure of 1,6-ditosyl-1,6-diazecane, C22H30N2O4S2
  99. Crystal structure of N-phenyl-2-(pyridin-4-ylcarbonyl)hydrazinecarboxamide with Z′ = 4, C13H12N4O2
  100. Crystal structure of N,N-bis(diphenylphosphanyl)cyclohexylamine, C30H31NP2
  101. Crystal structure of 3-(4-hydroxy-3-methoxyphenyl)-N-phenylpropanamide, C16H17NO3
  102. Crystal structure of 6-(2-fluorophenyl)-3-phenyl-[1,2,4]-triazolo[3,4-b][1,3,4]thiadiazole, C15H9FN4S
  103. Crystal structure of catena-poly[aqua(dicyanoazanido-2κN-μ2-dicyanoazanido-1κN:2κN′)(μ2-2-methoxy-6-(((2-((3-methoxy-2-oxidobenzylidene)amino)ethyl)imino)methyl)phenolato-1κ2N,N′,2κ2O,O′,1κ2O′′,O′′′:2κ2O′′,O′′′)cadmium(II)copper(II)], C22H20CdCuN8O5
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